Modify Selection
- Mine locations, excavations, and structures:
- Gobs
Home Links
Results 11 - 20 of 32
-
7/18/2016 - Contracts and cooperative agreementsA capacity-building contract to expand on previous and existing work with computational fluid dynamics (CFD) modeling using the FLUENT code to develop a modeling and predictive tool for mine ventilation.
-
7/18/2016 - Contracts and cooperative agreementsA capacity-building contract to examine the explosion and fire hazards in the gobs of underground longwall coal mines through physical and numerical modeling.
-
4/29/2016 - Contracts and cooperative agreementsA capacity-building contract to investigate safety aspects of mine ventilation through technical development and training.
-
1/1/2011 - Peer reviewed journal articlesGob gas ventholes capture methane emissions. This study used bivariate normal distributions to determine the conditional probabilities of depth-displacement, depth-flow percentage, depth-formation, and depth-gas content of the overburden formations.
-
7/1/2010 - Peer reviewed journal articlesDuring longwall mining, fracturing and relaxation in the gob creates new and highly permeable flow paths. The production rate-pressure behavior of a gob gas venthole (GGV) drilled over a longwall panel was analyzed by using multi-rate drawdown and decl...
-
6/1/2010 - Conference papersThis study demonstrates a fractal approach to calculating permeability of gob for air leakage that allows the calculation of porosity and permeability from the size distribution of broken rock material in the gob, which can be determined from image anal...
-
3/1/2010 - Peer reviewed journal articlesThis work presents a fractal porous medium model to predict gob porosity and permeability for controlling methane flow and to predict air leakage into the gob.
-
2/1/2007 - Conference papersMethane can be a significant hazard in coal mine longwalling operations and extensive methane mitigation techniques are employed by coal mine operators. Reservoir modeling techniques are used to better understand the liberation and migration of methane ...
-
6/1/2006 - Conference papersThis paper focuses on the flow patterns within the gob under three different ventilation systems: one-entry and two-entry bleederless systems, as well as a three-entry bleeder system.
-
10/1/2002 - Conference papersReport on the development and field testing of a solar powered, remote gob gas venthole monitoring and cellular telephone-based real-time data transmission system.
Home Links
Content source: National Institute for Occupational Safety and Health, Mining Program